May be leftist, but is a concern. Sorry, I left my blinders at the office.
Well pretty much of our entire defense communications system is a concern.
Almost all of our communications are satellite based.
Last I knew we have no way of defending our satellites. It easy and cheep to attack satellites but almost impossible to defend them.
If we are to have a secure communication system it will have to be hard wired and that would be incredibly expensive considering the distances.